Home / 5,431.70-8,143.56-1,731.80

Finding the Fourth Proportional to 5,431.70, 8,143.56 and 1,731.80

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Solution

The fourth proportional to 5,431.70, 8,143.56 and 1,731.80 is: 2,596.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.70 : 8,143.56 = 1,731.80 : x
  2. Step 2: Convert to fraction form
    5,431.70/8,143.56 = 1,731.80/x
  3. Step 3: Cross multiply
    5,431.70x = 8,143.56 × 1,731.80
  4. Step 4: Simplify right side
    5,431.70x = 14,103,037.57
  5. Step 5: Solve for x
    x = 14,103,037.57/5,431.70
  6. Step 6: Final answer
    x = 2,596.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.